23887157 has 12 divisors (see below), whose sum is σ = 27885996. Its totient is φ = 20401920.

The previous prime is 23887141. The next prime is 23887177. The reversal of 23887157 is 75178832.

It can be written as a sum of positive squares in 2 ways, for example, as 10278436 + 13608721 = 3206^2 + 3689^2 .

It is not a de Polignac number, because 23887157 - 2⁴ = 23887141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23887117) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16607 + ... + 17987.

It is an arithmetic number, because the mean of its divisors is an integer number (2323833).

Almost surely, 2^23887157 is an apocalyptic number.

It is an amenable number.

23887157 is a deficient number, since it is larger than the sum of its proper divisors (3998839).

23887157 is a wasteful number, since it uses less digits than its factorization.

23887157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1748 (or 1741 counting only the distinct ones).

The product of its digits is 94080, while the sum is 41.

The square root of 23887157 is about 4887.4489255643. The cubic root of 23887157 is about 287.9971265467.

The spelling of 23887157 in words is "twenty-three million, eight hundred eighty-seven thousand, one hundred fifty-seven".